US4435368A - Hydrometallurgical process for selective dissolution of mixtures of oxy compounds - Google Patents
Hydrometallurgical process for selective dissolution of mixtures of oxy compounds Download PDFInfo
- Publication number
- US4435368A US4435368A US06/086,791 US8679179A US4435368A US 4435368 A US4435368 A US 4435368A US 8679179 A US8679179 A US 8679179A US 4435368 A US4435368 A US 4435368A
- Authority
- US
- United States
- Prior art keywords
- nickel
- mixture
- composition
- mother
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/04—Obtaining lead by wet processes
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0063—Hydrometallurgy
- C22B15/0065—Leaching or slurrying
- C22B15/0067—Leaching or slurrying with acids or salts thereof
- C22B15/0069—Leaching or slurrying with acids or salts thereof containing halogen
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
- C22B19/22—Obtaining zinc otherwise than by distilling with leaching with acids
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B23/00—Obtaining nickel or cobalt
- C22B23/04—Obtaining nickel or cobalt by wet processes
- C22B23/0407—Leaching processes
- C22B23/0415—Leaching processes with acids or salt solutions except ammonium salts solutions
- C22B23/0423—Halogenated acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Definitions
- the present invention relates to a hydrometallurgical process for the selective dissolution of mixtures of metallic oxy compounds; it relates particularly to the selective putting into solution of certain non-ferrous metals present in these mixtures.
- the metallurgist In the course of the putting into operation of processes by which pure metal is obtained from mineral, the metallurgist often meets mixtures of metallic oxy compounds. These mixtures can be met at any stage of the extraction of the metal, from the mineral, which can be a mixed oxide, up to the residues from the refining of the metals.
- an aim of the invention is to provide a process of selective dissolution of nickel oxide which allows it to be separated from oxides of cobalt, lead and copper.
- Another aim of the invention is to provide a process of selective dissolution of zinc oxide which allows it to be separated from oxides of copper and lead.
- Another aim of the invention is to provide a process of selective dissolution of copper oxide which allows it to be separated from lead oxide.
- This process consists essentially in putting into suspension in an aqueous phase the mixture of oxides to be treated and then subjecting this suspension to the action of chlorine.
- oxygenated compounds as used herein is intended to include a large number of compounds including oxides, hydroxides, carbonates, basic carbonates, and even certain sulphates and silicates.
- the chlorine necessary for the operation of this process is introduced in any convenient manner; it can thus be synthesised in situ by chemical or electrochemical means or introduced into the solution in the form of gaseous chlorine.
- the selectivity of the dissolution depends greatly on the pH and it is important to keep the pH beyond certain values which vary according to the oxide which it is desired to preferentially dissolve; in general, the pH should not be below the value of 1-2 and more often 3-4; this why it can be necessary to provide systems to keep a minimum pH. This is particularly important whilst the mixture contains much sulphur in its elemental form or as sulphide; the oxidation of sulphur by chlorine indeed causes a significant liberation of acidity.
- FIGURE of the drawing is a diagramatic flowsheet of the process according to the invention.
- the mixture of oxygenated compounds to be treated arrives at 1 in an apparatus A where it is suspended in a solution which is introduced at 2.
- the suspension which leaves at 3 from A enters a reactor B where it is subjected to the action of gaseous chlorine which is introduced at 5.
- the solution obtained after the reaction is removed from B at 6 and introduced at 7 into a decanting vessel D where the larger particles are separated from the solution and removed in the form of a suspension at 9.
- the thus clarified solution is led into a filtration apparatus C where the solid and liquid phases are then separated; the solid phase is removed at 11 whilst the liquid phase is drawn off at 12 and is passed to another type of apparatus (not shown) where it is subjected to further treatments to produce metal salts or pure metals.
- the solid phase which leaves at 11 from C is led at 13 into an apparatus A' in which it is subjected to suspension in an aqueous phase which enters at 14; this aqueous phase can be water, or a solution derived from another stage of the dissolution process if it is desired to operate an apparatus consisting of more than 2 stages.
- the stage of decantation can sometimes be omitted, in which case the solution which leaves at 6 from B is directly passed into the vessel C at 10.
- the resultant suspension kept under constant agitation, was then brought to the working temperature. Injection of chlorine into the reactor was then commenced and continued during the duration of the reaction. At regular intervals, samples were taken in order that the course of the reaction should be followed.
- the reaction mixture was filtered and the mother liquor recovered; the residual cake was then washed with water and the washing water covered. The mother liquor, the washing water and the residual cake were analysed. The cake could then be subjected to a new dissolution in chlorine. Then, the co-efficient of selectivity K was calculated according to the formula: ##EQU1## e.g., if Nickel is the regarded metal and if Iron is the impurity: ##EQU2##
- a trial for a continuous period of five days was carried out on a micropilot scale according to the scheme represented in FIG. 1.
- the lixiviation of the oxide was carried out in two cascade reactors of about 2 liters, the first being fed with the initial oxide previously suspended in the filtrate obtained from the outlet of the second reactor which, itself, is fed by a suspension in water of the residue leaving the second reactor.
- the temperatures and durations of lixiviation were identical in each reactor and respectively equal to 95° C. and 12 hours.
- the rate of feed of oxide was 25 g per hour and that of the incoming water was 170 ml per hour.
- the charge of chlorine was equal to twice the stoichiometric quantity with respect to nickel, namely 41 g per hour.
- the mineral treated was composed essentially of clay (SiO 2 +Al 2 O 3 +MgO), of carbonates (CaCO 3 -MgCO 3 ), of iron oxide (limonite), of lead oxide and of smithsonite (ZnCO 3 ).
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Removal Of Specific Substances (AREA)
- Catalysts (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
- Medicines Containing Plant Substances (AREA)
Abstract
The invention provides a process for the selective dissolution of oxygenated compounds containing at least one non-ferrous metal selected from the group consisting of nickel, zinc, and copper, present in a mixture of oxygenated compounds containing said at least one non-ferrous metal and at least one element selected from the group consisting of lead, cobalt, iron, manganese, and silicon, and comprises suspending the mixture of the oxygenated metallic compounds in an aqueous phase which, preferably, contains chloride and alkaline earth metal ions; treating the resulting aqueous suspension, maintained at a pH exceeding about 1, with chlorine, preferably at a temperature ranging from about 60° C. to the boiling point of the suspension, to selectively solubilize the said at least one non-ferrous metal while the said at least one element remains in an essentially insoluble residue; and separating the aqueous solution containing the dissolved said at least one non-ferrous metal from the insoluble residue. The starting mixture of the oxygenated compounds is exemplified by the product resulting from the roasting of a nickel matte, a basic carbonate of nickel, a mineral oxide of zinc, and the dust of a blast furnace.
Description
This is a continuation of application Ser. No. 950,446, filed Oct. 11, 1978, which is a continuation of 904,306, filed May 9, 1978, now abandoned, which is also a continuation of 765,813, filed Feb. 4, 1977, now abandoned.
The present invention relates to a hydrometallurgical process for the selective dissolution of mixtures of metallic oxy compounds; it relates particularly to the selective putting into solution of certain non-ferrous metals present in these mixtures.
In the course of the putting into operation of processes by which pure metal is obtained from mineral, the metallurgist often meets mixtures of metallic oxy compounds. These mixtures can be met at any stage of the extraction of the metal, from the mineral, which can be a mixed oxide, up to the residues from the refining of the metals. One may cite as examples of such mixtures, the products of roasting of pyrites, the products of roasting of nickel mattes and the basic carbonates of nickel (B.N.C.) which are derived from a first reduction of the mineral following ammoniacal lixiviation.
In order to continue the process of extraction of the metal or metals, it is necessary to separate one from the other and, in particular to separate iron which is very often present in minerals of non-ferrous metals and which is then found in variable proportions in the first stages of the purification of these metals.
To carry out this separation, one proceeds, in general, to put into solution the metals to be recovered; this dissolution is most often done by means of hydrochloric or sulphuric acid; however, these dissolutions are not selective and appreciable amounts of iron are found in the final solutions.
This is why it is an aim of the invention to provide a process for the selective dissolution of oxides of non-ferrous metals which permits their separation from iron, manganese and silica. PG,5
More particularly, an aim of the invention is to provide a process of selective dissolution of nickel oxide which allows it to be separated from oxides of cobalt, lead and copper.
Another aim of the invention is to provide a process of selective dissolution of zinc oxide which allows it to be separated from oxides of copper and lead.
Another aim of the invention is to provide a process of selective dissolution of copper oxide which allows it to be separated from lead oxide.
According to the invention, these aims and others which will become apparent later are obtained by means of a process described below.
This process consists essentially in putting into suspension in an aqueous phase the mixture of oxides to be treated and then subjecting this suspension to the action of chlorine.
The term "oxygenated compounds" as used herein is intended to include a large number of compounds including oxides, hydroxides, carbonates, basic carbonates, and even certain sulphates and silicates.
The chlorine necessary for the operation of this process is introduced in any convenient manner; it can thus be synthesised in situ by chemical or electrochemical means or introduced into the solution in the form of gaseous chlorine.
Although it is possible to carry out the process at elevated temperatures, it is more convenient to perform the dissolution at a temperature below that of the boiling point of water and preferably between 60° and 100° C.
The selectivity of the dissolution depends greatly on the pH and it is important to keep the pH beyond certain values which vary according to the oxide which it is desired to preferentially dissolve; in general, the pH should not be below the value of 1-2 and more often 3-4; this why it can be necessary to provide systems to keep a minimum pH. This is particularly important whilst the mixture contains much sulphur in its elemental form or as sulphide; the oxidation of sulphur by chlorine indeed causes a significant liberation of acidity.
It is also possible to vary the selectivity of the dissolution by varying the composition, the complexing agents such as the chloride ion and the pH of the aqueous phase which serves to suspend the mixture of oxygenated compounds.
Thus, strong concentrations of chloride ion bring about an easier solution of the metals which form the complexes with the chloride ion.
It may also be noted that the presence of calcium ions strongly lowers the concentration of sulphate ions and thus allows an easier dissolution of metals which have insoluble sulphates and particularly of lead; by contrast, the presence of sulphate ions prevents the dissolution of plumbous ions.
This process of dissolution is particularly noteworthy by reason of its selectivity. At first, only the zinc and the nickel are dissolved, then as the process is continued copper is dissolved, and then lead which only dissolves in aqueous phases which are rich both in chloride ions and in ions of alkaline earth metals (calcium, strontium, barium, radium). Neither iron, manganese, cobalt nor silica are dissolved appreciably.
It will be appreciated that such a selective dissolution process is advantageous; indeed, not only does it allow separation of nickel and cobalt, or of zinc, copper and lead, but it also allows the purification of iron, cobalt and manganese which remain insoluble in these conditions.
The invention will be further described with reference to a preferred embodiment indicated in the accompanying drawing, but this description is not limitative of the invention.
The single FIGURE of the drawing is a diagramatic flowsheet of the process according to the invention.
Referring to this FIGURE, the mixture of oxygenated compounds to be treated arrives at 1 in an apparatus A where it is suspended in a solution which is introduced at 2. The suspension which leaves at 3 from A enters a reactor B where it is subjected to the action of gaseous chlorine which is introduced at 5.
The solution obtained after the reaction is removed from B at 6 and introduced at 7 into a decanting vessel D where the larger particles are separated from the solution and removed in the form of a suspension at 9. The thus clarified solution is led into a filtration apparatus C where the solid and liquid phases are then separated; the solid phase is removed at 11 whilst the liquid phase is drawn off at 12 and is passed to another type of apparatus (not shown) where it is subjected to further treatments to produce metal salts or pure metals.
The solid phase which leaves at 11 from C is led at 13 into an apparatus A' in which it is subjected to suspension in an aqueous phase which enters at 14; this aqueous phase can be water, or a solution derived from another stage of the dissolution process if it is desired to operate an apparatus consisting of more than 2 stages. The suspension leaves at 15 from A' and enters at 16 a reactor B' in which it is mixed with the suspension which leaves at 9 from D and which enters at 18 into B'; the mixture of the two suspensions is then subjected to a bubbling of chlorine which is introduced into the vessel B' at 17.
The solution which leaves at 19 from B' is led at 20 into a filtration apparatus C' where the solid and liquid phases are separated; the liquid phase is recovered at 22 and returned at 2 into A, whilst the solid phase is removed at 21; the solid phase can be discarded, or subjected to a further dissolution in the case of a multistage installation.
The stage of decantation can sometimes be omitted, in which case the solution which leaves at 6 from B is directly passed into the vessel C at 10.
The following non-limitative examples are provided to further illustrate the invention and to enable the experts to determine the suitable operating conditions in each particular case.
In the tables below, the abbreviation "n.d." means "not determined".
In a reactor equipped with a cooling coil, an agitator, a thermometer and a pipe for injection of chlorine, there was poured the desired amount of water or of a solution of sodium chloride or calcium chloride, and then the mixture of oxygenated compounds was added either in one batch or little by little.
The resultant suspension, kept under constant agitation, was then brought to the working temperature. Injection of chlorine into the reactor was then commenced and continued during the duration of the reaction. At regular intervals, samples were taken in order that the course of the reaction should be followed.
At the end of the reaction, the reaction mixture was filtered and the mother liquor recovered; the residual cake was then washed with water and the washing water covered. The mother liquor, the washing water and the residual cake were analysed. The cake could then be subjected to a new dissolution in chlorine. Then, the co-efficient of selectivity K was calculated according to the formula: ##EQU1## e.g., if Nickel is the regarded metal and if Iron is the impurity: ##EQU2##
______________________________________ Mixture to be treated 1 kg of wet B.N.C. con- taining 16.89% by weight of nickel Aqueous phase for the 500 ml water suspension Amount of chlorine injected 40 g per hour Duration of thereaction 7 hours Working temperature 75° C. ______________________________________
(a) Change in pH and amount of nickel in solution as a function of time
______________________________________ Duration of the Amount of Ni.sup.++ in pH of reaction mixture reaction (hours) the solutions obtained at 75° C. ______________________________________ 0 0.040 7.5 1/2 6.2 6.1 1 15.8 5.8 2 36.0 5.4 3 54.4 4.8 4 73.0 4.3 5 84.2 4.0 6 87.0 3.7 ______________________________________
(b) Results of the dissolution.
The results of the analysis of the cake, the mother-liquors and the washing waters are given in the following table together with the composition of the starting mixture:
__________________________________________________________________________ COMPOSITION of the of the initial of the of the cake K with product mother- washing (fully respect to (dry) liquor waters dry) iron (mother- (%) (g/l) (g/l) (%) liquor) __________________________________________________________________________ Nickel (Ni) 47.00 97 52 50 590 Cobalt (Co) 0.65 3.4.10.sup.-3 0.6.10.sup.-3 4.40 1.3 Iron (Fe) 0.20 0.7.10.sup.-3 ≦0.2.10.sup.-3 0.95 Manganese (Mn) 0.05 0.5.10.sup.-3 ≦0.1.10.sup.-3 0.31 2.9 Zinc (Zn) 0.08 0.18 32.10.sup.-3 nd 640 Copper (Cu) 0.07 0.018 2.3.10.sup.-3 nd 72 Lead (Pb) ≦0.001 nd nd nd Sulphate (SO.sub.4.sup.--) 4.95 17.8 4.3 2.60 Total Sulphur (S) 2.41 5.9 1.5 0.96 Carbon dioxide (CO.sub.2) 6.99 nd nd nd Ammonia (NH.sub.3) 0.51 ≦20.10.sup.-3 ≦20.10.sup.-3 nd Chromium (Cr) ≦0.002 nd nd nd Aluminium (Al) ≦0.005 nd nd nd Bismuth (Bi) ≦0.005 nd nd nd Tin (Sn) ≦0.005 nd nd nd Sodium (Na) <0.01 nd nd nd Calcium (Ca) nd nd nd nd __________________________________________________________________________ Final pH 3.7 Volume of mother-liquor recovered 760 ml Volume of washing water recovered 1240 ml Dry weight of residual cake 50 g Yield of the dissolution of the nickel 85% __________________________________________________________________________
______________________________________ Mixture to be treated 1000 g of B.N.C. containing 16.89% of nickel Aqueous phase for the 500 ml of 1 M sodium suspension chloride Amount of chlorine 40 g per hour injected Duration of thereaction 5 hours Working temperature 75° C. ______________________________________
The results of the analysis of the cake, the mother-liquor and the washing water are given in the following table together with the composition of the (fully dry) starting mixture:
__________________________________________________________________________ COMPOSITION of the dried of the of the K with initial mother- washing of the respect to product liquors waters cake iron (mother- (%) (g/l) (g/l) (%) liquors) __________________________________________________________________________ Nickel (Ni) 47.00 105 36.5 51 110 Cobalt (Co) 0.65 0.13 0.004 3.90 1 Iron (Fe) 0.70 0.004 0.002 0.71 -- Manganese (Mn) 0.05 ≦0.0001 ≦0.0001 0.23 <1 Zinc (Zn) 0.08 0.150 0.049 0.034 108 Copper (Cu) 0.07 0.025 0.0046 0.23 18 Lead (Pb) ≦0.001 0.001 ≦0.0001 0.0005 50≦ Sulphate (SO.sub.4.sup.--) 4.95 20.0 1.95 Total sulphur (S) 2.41 6.6 1.30 Carbon dioxide (CO.sub.2) 6.99 nd Ammonia (NH.sub.3) 0.51 nd Chromium (Cr) ≦0.002 nd Aluminium (Al) ≦0.005 nd Bismuth (Bi) ≦0.005 nd Tin (Sn) ≦0.005 nd Sodium (Na) <0.01 15 __________________________________________________________________________ Volume of mother-liquor 850 ml Volume of washing water recovered 1200 ml Dry weight of residual cake 68 g Yield of the dissolution of the nickel 79.3% __________________________________________________________________________
______________________________________ Mixture to be treated 1000 g of B.N.C. containing 16.89% nickel Aqueous phase for the 500 ml of 1.3 M calcium suspension chloride solution Amount of chlorine injected 1.3 M Duration of the reaction 6 hours Working temperature 75° C. ______________________________________
The results of the analysis of the cake, the mother-liquor and the washing water are given in the following table, together with the composition of the starting mixture:
__________________________________________________________________________ COMPOSITION of the dried of the of the K with initial mother- washing of the respect to product liquors waters cake iron (mother- (%) (g/l) (g/l) (%) liquor) __________________________________________________________________________ Nickel (Ni) 47.00 91 48 38.8 390 Cobalt (Co) 0.65 0.01 0.005 2.9 3 Iron (Fe) 0.70 0.001 0.0007 0.47 Manganese (Mn) 0.05 0.002 0.0008 1.56 8 Zinc (Zn) 0.08 0.120 0.066 0.018 300 Copper (Cu) 0.07 0.044 0.015 0.15 125 Lead (Pb) ≦0.0001 0.026 0.008 0.0005 ≦5000 Sulphate (SO.sub.4.sup.--) 4.95 1.9 2.2 18.23 Total sulphur (S) 2.41 nd Carbon dioxide (CO.sub.2) 6.99 nd Ammonia (NH.sub.3) 0.51 nd Chromium (Cr) ≦0.002 nd Aluminium (Al) ≦0.005 nd Bismuth (Bi) ≦0.005 nd Tin (Sn) ≦0.01 nd Calcium (Ca) 13.8 __________________________________________________________________________ Volume of mother-liquors recovered 820 ml Volume of washing waters recovered 1060 ml Dry weight of residual cake 94.5 g Yield of the dissolution of the nickel 77.2% __________________________________________________________________________
______________________________________ Mixture to be treated 300 g of residue containing 80% water derived from a first attack on B.N.C. Aqueous phase for the 300 ml water suspension Amount of chlorine injected 40 g per liter Duration of thereaction 5 hours Working temperature 75° C. ______________________________________
The results of the analysis of the cake, the mother-liquors and the washing waters are given in the following table together with the composition of the starting mixture:
______________________________________ COMPOSITION of the dried of the of the initial mother- washing of the product liquors waters cake (%) (g/l) (g/l) (%) ______________________________________ Nickel (Ni) 45 65.80 22.10 45.5 Cobalt (Co) 2.63 0.003 0.03 9.95 Iron (Fe) 0.67 0.0001 0.0002 1.90 Manganese (Mn) 0.24 0.004 0.0002 0.63 Zinc (Zn) 0.040 0.110 0.037 0.025 Copper (Cu) 0.27 0.170 0.046 0.31 Lead (Pb) nd ≦0.0003 0.0003 ≦0.010 Sulphate (SO.sub.4.sup.--) nd 5.50 1.80 1.14 Total sulphur (S) nd 1.80 0.62 0.40 ______________________________________ Volume of mother-liquors recovered 450 ml Volume of washing waters recovered 430 ml Dry weight of residual cake 22 g Yield of the dissolution of the nickel 68.5% Final pH 3.3 ______________________________________
______________________________________ Mixture to be treated 134 g of a residue of B.N.C. after two successive attacks Aqueous phase for the 180 ml water suspension Amount of chlorine injected 40 g per hour Duration of thereaction 5 hours Working temperature 75° C. ______________________________________
The results of the analysis of the cake, the mother-liquors and the washing waters are given in the following table together with the composition of the starting mixture:
______________________________________ COMPOSITION of the dried of the of the initial mother- washing of the product liquors waters cake (%) (g/l) (g/l) (%) ______________________________________ Nickel (Ni) 51 2.5 8.3 43 Cobalt (Co) 6.3 0.27 0.0007 11.30 Iron (Fe) 1.1 0.0009 0.0005 2.30 Manganese (Mn) 0.40 0.0002 0.0002 0.70 Zinc (Zn) 0.06 0.065 0.022 0.04 Copper (Cu) 0.38 0.20 0.059 0.34 Lead (Pb) nd 0.0002 0.0002 0.18 Sulphate (SO.sub.4.sup.--) nd 1.20 0.58 1.13 Total sulphur (S) nd 0.46 0.20 nd ______________________________________ Volume of mother-liquor recovered 175 ml Volume of washing water recovered 220 ml Dry weight of residual cake 10.5 g Yield of the dissolution of the nickel 57% Final pH 2.2 ______________________________________
______________________________________ Mixture to be treated 125 g of an oxide derived from moderate roasting of a matte at about 700°-800° C. Aqueous phase for the 1 liter of water suspension Duration of the introduction 6 hours of the oxide Amount of chlorine injected 37 g per hour Duration of the addition of 6 hours chlorine Working temperature 95° C. ______________________________________
The reaction was allowed to continue for one hour after the end of the addition of chlorine.
The results of the analysis of the cake, the mother-liquors and the washing waters are given in the following table together with the composition of the starting mixture:
______________________________________ COMPOSITION of the dried of the mother-liquors initial product and the washing waters % % ______________________________________ Nickel (Ni) 72.23 42 Cobalt (Co) 1.75 0.002 Iron (Fe) 3.25 0.002 Sulphate (SO.sub.4.sup.--) nd 9.7 Total sulphur (S) 2.70 nd ______________________________________ Volume of mother-liquors recovered 110 ml Volume of washing waters recovered Yield of the dissolution of the nickel 45.5% Final pH 5.0 (95° C.) ______________________________________
______________________________________ Mixture to be treated 125 g of an oxide derived from moderate roasting of a matte at about 700°-800° C. Aqueous phase for the 1 liter of water suspension Duration of theintroduction 5 hours (6.25 g each of the oxide quarter hour) Amount of chlorine injected 19 g per hour Duration of the addition of 12 hours chlorine ______________________________________
The reaction was allowed to continue for 7 hours after the end of the addition of chlorine.
The results of the analysis of the cake, the mother-liquors and the washing waters are given in the following table together with the composition of the starting mixture:
______________________________________ COMPOSITION of the dried of the of initial mother-liquor the K with product & the wash- cake respect to % % % iron cobalt ______________________________________ Nickel (Ni) 72.23 53.6 46 1227 658 Cobalt (Co) 1.75 ≦0.002 4.7 Iron (Fe) 3.25 ≦0.002 9 Sulphate (SO.sub.4.sup.--) nd 10.8 nd Total sulphur (S) 2.70 nd ______________________________________ Volume of mother-liquor recovered and 1110 ml Volume of washing water recovered Dry weight of residual cake 36 g Yield of the dissolution of the nickel 78% Final pH 3.4 ______________________________________
Trial of continuous dissolution of an oxide of nickel
A trial for a continuous period of five days was carried out on a micropilot scale according to the scheme represented in FIG. 1. As the drawing shows, the lixiviation of the oxide was carried out in two cascade reactors of about 2 liters, the first being fed with the initial oxide previously suspended in the filtrate obtained from the outlet of the second reactor which, itself, is fed by a suspension in water of the residue leaving the second reactor.
The temperatures and durations of lixiviation were identical in each reactor and respectively equal to 95° C. and 12 hours. The rate of feed of oxide was 25 g per hour and that of the incoming water was 170 ml per hour. The charge of chlorine was equal to twice the stoichiometric quantity with respect to nickel, namely 41 g per hour.
After continuous operation of about 100 hours, there were obtained a solution of nickel chloride and a residue.
The results of the analysis of the residue and of the lixiviation solution are shown in the following table together with the composition of the starting mixture:
______________________________________ COMPOSITION of the dried of the K with initial lixiviation respect to product solution of the co- % g/l residue iron balt ______________________________________ Nickel (Ni) 68.8 84 22 1830 220 Cobalt (Co) 1.8 0.010 5.3 Iron (Fe) 3.0 ≦0.003 10.3 Total Sulphur (S) 2.30 2.9 0.17 ______________________________________ Yield of the dissolution of nickel 84% pH of the lixiviation solution 4.3 ______________________________________
Treatment of a zinc oxide mineral obtained from the slag heaps of a paper factory in France
The mineral treated was composed essentially of clay (SiO2 +Al2 O3 +MgO), of carbonates (CaCO3 -MgCO3), of iron oxide (limonite), of lead oxide and of smithsonite (ZnCO3).
______________________________________ Mixture to be treated 129.4 g Aqueous phase for the suspension 1000 ml of water Charge of chlorine 20 g per hour Duration of the reaction 6 hours Working temperature 85° C. ______________________________________ KINETICS OF THE ATTACK Composition of the fully dry starting Composition of the solution after product (g/l) Element (%) 1 h 2 h 3 h 4 h 5 h 6 h ______________________________________ Zinc (Zn) 8.2 6.70 7.04 7.56 7.64 7.68 7.72 Lead (Pb) 4.5 0 0 0 0 0.1 0.1 Magnesium 2.5 2.18 3.02 3.16 3.16 3.16 3.16 (Mg) Calcium 5.1 3.76 4.88 4.95 5.15 5.20 5.20 (Ca) Iron (Fe) 6.25 pH 3.5 2.9 2.35 2.32 1.9 2.1 Chloride nd 20.15 33.02 32.84 34.79 34.26 32.84 (Cl.sup.-) ______________________________________
__________________________________________________________________________ BALANCE SHEET OF THE ATTACK Yield of Composition COMPOSITION the attack of the fully of the of the of the with res- dry starting starting mother- washing of the pect to the product solution liquors waters residue initial Element (%) (g/l) (g/l) (g/l) (%) product __________________________________________________________________________ Zinc (Zn) 8.2 0 7.95 0.78 1.8 85.9 Lead (Pb) 4.5 0 0.12 0 6.3 2.5 Magnesium (mg) 2.5 0 3.2 0.32 0.08 98.4 Calcium (Ca) 5.1 0 5.1 0.55 0.22 97 Iron (Fe) 6.25 0 -- -- 8 -- __________________________________________________________________________ Volume of mother-liquor recovered 1050 ml Volume of washing waters recovered 500 ml Weight of residual cake 79.8 g __________________________________________________________________________
______________________________________ Mixture to be treated 123 g of a mineral obtained from the slag heaps of a paper factory in France Aqueous phase for the suspension 1000 ml of a solution containing 180.8 g of magnesium chloride and 1786.7 g of calcium chloride hexahydrate Charge of chlorine 8.6 g per hour Duration of thereaction 7 hours Working temperature 85° C. ______________________________________ KINETICS OF THE ATTACK Composition of the fully dry starting Composition of the solution after Ele- product (g/l) ment (%) 1 h 2 h 3 h 4 h 5 h 6 h 7 h ______________________________________ Zinc 8.2 6.70 7.10 7.15 7.20 7.25 7.30 7.36 (Zn) Lead 4.5 5.1 5.2 5.0 4.7 4.3 4.4 4.2 (Pb) pH 3.2 2.8 2.8 2.8 3.3 3.1 3.1 ______________________________________
__________________________________________________________________________ BALANCE SHEET OF THE ATTACK Yield of Composition COMPOSITION the attack of the fully of the of the of the with res- dry starting starting mother- washing of the pect to the product solution liquors waters residue initial Element (%) (g/l) (g/l) (g/l) (%) product __________________________________________________________________________ Zinc (Zn) 8.2 0 7.30 0.09 2.13 78.5 Lead (Pb) 4.5 0 4.35 0.23 1.25 78.8 Magnesium (Mg) 2.5 0.49 84.8 Calcium (Ca) 5.1 4.25 35.5 Iron (Fe) 6.25 0 6.65 __________________________________________________________________________ Volume of mother-liquor recovered 1010 ml Volume of washing waters recovered 500 ml Weight of residual cake 95.5 g __________________________________________________________________________
Attack on the dusts from the smoke of the blast furnaces of Anzin
__________________________________________________________________________ Mixture to be treated 100 g of dusts from the smoke Aqueous phase for the suspension 1000 ml of water Charge of chlorine 8 g per hour Duration of the reaction 51/2 hours Working temperature 85° C. __________________________________________________________________________ KINETICS OF THE ATTACK Composition of the fully dry starting Composition of the solution after product (g/l) Element (%) 30 m 1 h 2 h 3 h 4 h 5 h 5.30 h 7 h __________________________________________________________________________ Zinc (Zn) 10.08 1 1.4 4 6.1 6.9 7.2 7.7 Lead (Pb) 6.88 -- -- -- -- -- 0.37 0.45 Magnesium (Mg) 2.32 0.05 0.4 1 1.45 1.5 1.55 1.6 Calcium (Ca) 8.8 2.1 2.1 2.8 3.3 4.1 4.1 4.1 Iron (Fe) 27 <0.001 0.001 0.0015 0.002 0.009 0.076 0.056 pH 6.9 6.85 4.8 2.9 2.5 2.4 2.4 Chloride (Cl.sup.-) 4 5.7 12.8 17.8 20.6 22.2 22.3 __________________________________________________________________________
__________________________________________________________________________ BALANCE SHEET OF THE ATTACK Yield of Composition COMPOSITION the attack of the fully of the of the with res- dry starting mother- washing of the pect to the product liquors waters residue initial Element (%) (g/l) (g/l) (%) product __________________________________________________________________________ Zinc (Zn) 10.08 5.38 0.34 5.57 50.7 Lead (Pb) 6.88 0.31 0.008 6.93 4.5 Magnesium (Mg) 2.32 1.67 0.09 0.76 70.2 Calcium (Ca) 8.8 5.65 0.81 2.80 69.3 Iron (Fe) 27 0.015 0.002 22.43 Cadmium (Cd) 0.05 Manganese (Mn) 3.96 Silver (Ag) 88 ppm Silica (SiO.sub.2) 3.68-3.76 Aluminium (Al.sub.2 O.sub.3) 0.91 __________________________________________________________________________
__________________________________________________________________________ Mixture to be treated 100 g of dust from blast furnaces Aqueous phase for the suspension 1000 ml of a solution containing 180.8 g of magnesium chloride and 1786.7 g of calcium chloride hexahydrate Charge of chlorine 8 g per hour Duration of thereaction 7 hours Working temperature 85° C. __________________________________________________________________________ KINETICS OF THE ATTACK Composition of the fully dry starting Composition of the solution after product (g/l) Element (%) 30 m 1 h 2 h 3 h 4 h 5 h 6 h 7 h __________________________________________________________________________ Zinc (Zn) 10.08 2.6 3.6 4.25 5.3 5.75 5.9 7 5.3 Lead (Pb) 6.88 0.02 0.013 0.45 0.80 1 1.15 1.50 1.85 Iron (Fe) 27 0.0095 0.0095 0.0095 0.0095 0.0095 0.0095 0.0095 0.0095 pH 5.8 5.2 4.1 3.8 3.7 3.6 3.4 3.3 __________________________________________________________________________
__________________________________________________________________________ BALANCE SHEET OF THE ATTACK Yield of Composition COMPOSITION the attack of the fully of the of the with res- dry starting mother- washing of the pect to the product liquors waters residue initial Element (%) (g/l) (g/l) (%) product __________________________________________________________________________ Zinc (Zn) 10.08 5.6 0.4 5.31 51.1 Lead (Pb) 6.88 1.9 0.082 5.50 25.2 Magnesium (Mg) 2.32 1.15 52.5 Calcium (Ca) 8.8 5.11 44.8 Iron (Fe) 27 0.01 0.004 20.38 0.06 Cadmium (Cd) 0.05 Manganese (Mn) 3.96 Silver (Ag) 88 ppm Silica (SiO.sub.2) 3.68-3.76 Aluminium (Al.sub.2 O.sub.3) 0.91 __________________________________________________________________________ Volume of mother-liquors recovered 900 ml Volume of washing waters recovered 600 ml Weight of residual cake 95 g __________________________________________________________________________
The mixtures of oxides treated in Examples XIII to XVI were the residues derived from a factory for the production of zinc situated in Crotone in Italy. The principal phases found in these residues are:
ZnFe.sub.2 O.sub.4 --CaSO.sub.4, 2H.sub.2 O--ZnS--PbSO.sub.4 --ZnSO.sub.4, H.sub.2 O and CaSO.sub.4 1/2H.sub.2 O
__________________________________________________________________________ Mixture to be treated 80 g of residue Aqueous phase for the suspension 1000 ml of water Charge of chlorine 8 g per hour Duration of the reaction 6 hours Working temperature 85° C. __________________________________________________________________________ KINETICS OF THE ATTACK Composition of the initial Composition of the solution after product (g/l) Element (%) 1 h 2 h 3 h 4 h 5 h 6 h __________________________________________________________________________ Zinc (Zn) 13.5 3.5 3.7 3.7 4.2 4.3 4.6 Lead (Pb) 5.20 0.0058 0.00625 0.0074 0.008 0.0095 0.0106 Magnesium (Mg) 0.83 0.375 0.375 0.475 0.325 0.325 0.325 Calcium (Ca) 5.60 0.510 0.520 0.500 0.370 0.360 0.390 Iron (Fe) 15.6 0.083 0.104 0.115 0.225 0.275 0.350 pH 1.6 1.5 1.35 1.2 1.1 1.1 Chloride (Cl.sup.-) -- 3.7 5 5.6 7.3 7.9 8.7 __________________________________________________________________________
__________________________________________________________________________ BALANCE SHEET OF THE ATTACK Yield of Composition COMPOSITION the attack of the fully of the of the with res- dry starting mother- washing of the pect to the product liquors waters residue initial Element (%) (g/l) (g/l) (%) product __________________________________________________________________________ Zinc (Zn) 13.5 5 0.5 8.97 41.5 Lead (Pb) 5.20 0.0105 0.0025 5.55 0.24 Magnesium (Mg) 0.83 0.425 0.047 0.13 80.4 Calcium (Ca) 5.60 0.520 0.440 3.64 20.9 Iron (Fe) 15.6 0.4 0.030 13.61 3.6 __________________________________________________________________________ Volume of mother-liquors recovered 900 ml Volume of washing waters recovered 560 ml Weight of residual cake 95 g __________________________________________________________________________
__________________________________________________________________________ Mixture to be treated 80 g of residue Aqueous phase fot the suspension 1000 ml of water Charge of chlorine 8 g per hour Duration of the reaction 6 hours Working temperature 85° C. __________________________________________________________________________ KINETICS OF THE ATTACK Composition of the initial Composition of the solution after product (g/l) Element product 1 h 2 h 3 h 4 h 5 h 6 h __________________________________________________________________________ Zinc (Zn) 11.3 0.9 1.2 1.3 1.3 1.8 1.8 Lead (Pb) 7.25 0.0045 0.0048 0.0056 0.0058 0.006 0.00625 Magnesium (Mg) 0.47 0.030 0.0325 0.034 0.035 0.036 0.037 Calcium (Ca) 5.68 0.420 0.440 0.440 0.390 0.440 0.450 Iron (Fe) 19.1 0.140 0.144 0.146 0.147 0.151 0.151 pH 1.75 1.70 1.65 1.60 1.55 1.50 Chloride (Cl.sup.-) 2.3 2.5 2.8 3 3.2 3.4 __________________________________________________________________________
__________________________________________________________________________ BALANCE SHEET OF THE ATTACK Yield of Composition COMPOSITION the attack of the fully of the of the with res- dry starting mother- washing of the pect to the product liquors waters residue initial Element (%) (g/l) (g/l) (%) product __________________________________________________________________________ Zinc (Zn) 11.3 1.7 0.16 9.52 18 Lead (Pb) 7.25 0.007 0.0025 6.95 0.2 Magnesium (Mg) 0.47 0.037 0.00004 0.41 8.6 Calcium (Ca) 5.68 0.590 0.360 21.1 Iron (Fe) 19.1 0.125 0.031 15.50 1.1 __________________________________________________________________________ Volume of mother-liquors recovered 890 ml Volume of washing waters recovered 630 ml Weight of residual cake 77 g __________________________________________________________________________
The preceding description and examples allow those skilled in the art to appreciate the value and versatility of the process described above and to choose the correct operating conditions to solve their problems. They will moreover note the particular interest which there is in using this process to separate the nickel from cobalt and the iron contained in the basic carbonates of nickel and in the impure nickel oxides obtained from the roasting of mattes.
Claims (1)
1. A process for the selective dissolution of oxygenated compounds containing at least a nickel compound selected from the group consisting of nickel oxide, nickel carbonate and mixtures thereof, present in a mixture of oxygenated compounds containing said nickel compound and at least cobalt, copper and lead, comprising suspending the mixture of the oxygenated compounds in an aqueous phase, treating the resulting aqueous suspension at a pH exceeding about 1 and at a temperature of from about 60° to 100° C. with chlorine to selectively solubilize said nickel compound while said cobalt, copper and lead remain in an essentially insoluble residue, and separating the aqueous solution containing the dissolved said nickel compound from the insoluble residue.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7603266 | 1976-02-06 | ||
FR7603266A FR2340376A1 (en) | 1976-02-06 | 1976-02-06 | HYDROMETALLURGIC PROCESS FOR THE SELECTIVE DISSOLUTION OF MIXTURES OF OXYGEN COMPOUNDS |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US05950446 Continuation | 1978-10-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4435368A true US4435368A (en) | 1984-03-06 |
Family
ID=9168828
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/086,791 Expired - Lifetime US4435368A (en) | 1976-02-06 | 1979-10-22 | Hydrometallurgical process for selective dissolution of mixtures of oxy compounds |
Country Status (12)
Country | Link |
---|---|
US (1) | US4435368A (en) |
JP (1) | JPS5296903A (en) |
AU (1) | AU505079B2 (en) |
BE (1) | BE850703A (en) |
CA (1) | CA1096636A (en) |
DE (1) | DE2705016A1 (en) |
ES (1) | ES455649A1 (en) |
FR (1) | FR2340376A1 (en) |
GB (1) | GB1565752A (en) |
IT (1) | IT1072388B (en) |
NO (1) | NO770378L (en) |
PH (1) | PH12063A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0244910A1 (en) * | 1986-05-06 | 1987-11-11 | Hoogovens Groep B.V. | Separation of non-ferrous metals from iron-containing powdery material |
EP0248518A1 (en) * | 1986-04-24 | 1987-12-09 | Falconbridge Limited | Separation of nickel from copper in autoclave |
US20040228783A1 (en) * | 2003-05-16 | 2004-11-18 | Jaguar Nickel Inc. | Process for the recovery of value metals from material containing base metal oxides |
US20050118081A1 (en) * | 2003-09-30 | 2005-06-02 | Jaguar Nickel Inc. | Process for the recovery of value metals from base metal sulfide ores |
US20070214912A1 (en) * | 2003-12-17 | 2007-09-20 | Fermag Inc. | Hydrometallurgical Separation Process Of Steel Mill Electric Arc Furnace (Eaf) Dust And The Pigments Obtained By The Process |
US20080196619A1 (en) * | 2005-06-17 | 2008-08-21 | Ferrinov Inc. | Anti-Corrosion Pigments Coming Form Dust Of An Electric Arc Furnace And Containing Sacrificial Calcum |
WO2012100293A1 (en) | 2011-01-25 | 2012-08-02 | The University Of Queensland | Improved method of ore processing |
US20160355906A1 (en) * | 2011-01-25 | 2016-12-08 | The University Of Queensland | Method of ore processing |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0021809A1 (en) * | 1979-06-22 | 1981-01-07 | National Research Development Corporation | Chloride leaching |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US350669A (en) | 1886-10-12 | Process of extracting metals from ores | ||
US1736659A (en) | 1926-10-11 | 1929-11-19 | Lafayette M Hughes | Method of treating ores |
US2971836A (en) | 1957-04-29 | 1961-02-14 | James D Hall | Separation of nickel and cobalt |
US3647261A (en) | 1970-05-04 | 1972-03-07 | Dow Chemical Co | Process for solution mining of silver |
US3880651A (en) | 1971-07-16 | 1975-04-29 | Paul Etienne Queneau | Chlorine leaching of non-ferrous metal values with ammoniacal solutions |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3880653A (en) * | 1971-03-18 | 1975-04-29 | Falconbridge Nickel Mines Ltd | Chlorine leach process |
GB1456065A (en) * | 1971-03-18 | 1976-11-17 | Falconbridge Nickel Mines Ltd | Oxygen-acid leach process |
FR2152912A1 (en) * | 1971-09-10 | 1973-04-27 | Preussag Ag | Extraction of non-ferrous and noble metals from seawater - sludge - by treating with air and hydrogen sulphide |
FR2262698B1 (en) * | 1974-02-28 | 1976-10-08 | Penarroya Miniere Metallurg |
-
1976
- 1976-02-06 FR FR7603266A patent/FR2340376A1/en active Granted
-
1977
- 1977-01-24 BE BE174341A patent/BE850703A/en not_active IP Right Cessation
- 1977-01-26 AU AU21659/77A patent/AU505079B2/en not_active Expired
- 1977-01-26 CA CA270,495A patent/CA1096636A/en not_active Expired
- 1977-02-02 GB GB4355/77A patent/GB1565752A/en not_active Expired
- 1977-02-04 JP JP1202777A patent/JPS5296903A/en active Pending
- 1977-02-04 IT IT1244977A patent/IT1072388B/en active
- 1977-02-04 NO NO770378A patent/NO770378L/en unknown
- 1977-02-04 ES ES455649A patent/ES455649A1/en not_active Expired
- 1977-02-07 DE DE19772705016 patent/DE2705016A1/en not_active Ceased
- 1977-02-07 PH PH19443A patent/PH12063A/en unknown
-
1979
- 1979-10-22 US US06/086,791 patent/US4435368A/en not_active Expired - Lifetime
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US350669A (en) | 1886-10-12 | Process of extracting metals from ores | ||
US1736659A (en) | 1926-10-11 | 1929-11-19 | Lafayette M Hughes | Method of treating ores |
US2971836A (en) | 1957-04-29 | 1961-02-14 | James D Hall | Separation of nickel and cobalt |
US3647261A (en) | 1970-05-04 | 1972-03-07 | Dow Chemical Co | Process for solution mining of silver |
US3880651A (en) | 1971-07-16 | 1975-04-29 | Paul Etienne Queneau | Chlorine leaching of non-ferrous metal values with ammoniacal solutions |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0248518A1 (en) * | 1986-04-24 | 1987-12-09 | Falconbridge Limited | Separation of nickel from copper in autoclave |
EP0244910A1 (en) * | 1986-05-06 | 1987-11-11 | Hoogovens Groep B.V. | Separation of non-ferrous metals from iron-containing powdery material |
US20040228783A1 (en) * | 2003-05-16 | 2004-11-18 | Jaguar Nickel Inc. | Process for the recovery of value metals from material containing base metal oxides |
US7329396B2 (en) | 2003-05-16 | 2008-02-12 | Jaguar Nickel Inc. | Process for the recovery of value metals from material containing base metal oxides |
US7736606B2 (en) | 2003-09-30 | 2010-06-15 | Jaguar Nickel Inc. | Process for the recovery of value metals from base metal sulfide ores |
US20050118081A1 (en) * | 2003-09-30 | 2005-06-02 | Jaguar Nickel Inc. | Process for the recovery of value metals from base metal sulfide ores |
US7968065B2 (en) | 2003-09-30 | 2011-06-28 | Jaguar Nickel Inc. | Process for the recovery of value metals from base metal sulfide ores |
US20090013829A1 (en) * | 2003-09-30 | 2009-01-15 | Harris G Bryn | Process for the recovery of value metals from base metal sulfide ores |
US20070214912A1 (en) * | 2003-12-17 | 2007-09-20 | Fermag Inc. | Hydrometallurgical Separation Process Of Steel Mill Electric Arc Furnace (Eaf) Dust And The Pigments Obtained By The Process |
US20080196619A1 (en) * | 2005-06-17 | 2008-08-21 | Ferrinov Inc. | Anti-Corrosion Pigments Coming Form Dust Of An Electric Arc Furnace And Containing Sacrificial Calcum |
US8016935B2 (en) | 2005-06-17 | 2011-09-13 | Ferrinov Inc. | Anti-corrosion pigments coming from dust of an electric arc furnace and containing sacrificial calcium |
WO2012100293A1 (en) | 2011-01-25 | 2012-08-02 | The University Of Queensland | Improved method of ore processing |
EP2668303A4 (en) * | 2011-01-25 | 2016-06-22 | Univ Queensland | Improved method of ore processing |
US9447480B2 (en) | 2011-01-25 | 2016-09-20 | The University Of Queensland | Method of ore processing |
US20160355906A1 (en) * | 2011-01-25 | 2016-12-08 | The University Of Queensland | Method of ore processing |
KR101861885B1 (en) | 2011-01-25 | 2018-05-28 | 더 유니버서티 어브 퀸슬랜드 | Improved method of ore processing |
US10662503B2 (en) | 2011-01-25 | 2020-05-26 | The University Of Queensland | Method of ore processing using mixture including acidic leach solution and oxidizing agent |
Also Published As
Publication number | Publication date |
---|---|
BE850703A (en) | 1977-07-25 |
ES455649A1 (en) | 1978-01-01 |
FR2340376B1 (en) | 1979-07-20 |
DE2705016A1 (en) | 1977-08-18 |
AU2165977A (en) | 1978-08-03 |
PH12063A (en) | 1978-10-18 |
NO770378L (en) | 1977-08-09 |
GB1565752A (en) | 1980-04-23 |
AU505079B2 (en) | 1979-11-08 |
IT1072388B (en) | 1985-04-10 |
FR2340376A1 (en) | 1977-09-02 |
JPS5296903A (en) | 1977-08-15 |
CA1096636A (en) | 1981-03-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4288304A (en) | Hydrometallurgical process for treatment of sulphur ores | |
CA2437549C (en) | Production of zinc oxide from complex sulfide concentrates using chloride processing | |
EA009841B1 (en) | A process for the recovery of value metals from material containing base metal oxides | |
US4162294A (en) | Process for working up nonferrous metal hydroxide sludge waste | |
US4219354A (en) | Hydrometallurgical process for the treatment of oxides and ferrites which contain iron and other metals | |
US4150976A (en) | Method for the recovery of metallic copper | |
US3971652A (en) | Ammoniacal extraction of copper from metallic materials | |
US4435368A (en) | Hydrometallurgical process for selective dissolution of mixtures of oxy compounds | |
US4278463A (en) | Process for recovering cobalt | |
CA2394658C (en) | Process for the continuous production of high purity electrolytic zinc or zinc compounds from zinc primary or secondary raw materials | |
US4305914A (en) | Process for precipitating iron as jarosite with a low non-ferrous metal content | |
CA2040353A1 (en) | Method for forming copper arsenate | |
US4127639A (en) | Process for recovering silver from residues containing silver and lead | |
US4008134A (en) | Extraction and separation of metals from solids using liquid cation exchangers | |
US4166737A (en) | Method for dissolving the non-ferrous metals contained in oxygenated compounds | |
US4544460A (en) | Removal of potassium chloride as a complex salt in the hydrometallurgical production of copper | |
US3510259A (en) | Simultaneous leaching of zinc and manganese ores | |
US4610723A (en) | Process for leaching sulphide concentrates of the tetrahedrite type containing high concentrations of arsenic and antimony | |
US4053552A (en) | Solvent extraction of zinc from sulfite-bisulfite solution | |
CS201026B2 (en) | Method for the isolation of copper from metallic materials | |
CA2036379A1 (en) | Method for the recovery of zinc, copper and lead of oxidized and/or sulfurized ores and materials | |
US4200504A (en) | Extraction and separation of metals from solids using liquid cation exchangers | |
US3523787A (en) | Hydrometallurgical process for the recovery of high pure copper values from copper and zinc bearing materials and for the incidental production of potassium sulfate | |
Thorsen et al. | The integrated organic leaching-solvent extraction operation in hydrometallurgy | |
US4482377A (en) | Separation of zinc from a zinc-copper alloy |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
CC | Certificate of correction | ||
AS | Assignment |
Owner name: METALEUROP S.A., LE PERIPOLE 1, 58 RUE ROGER SALEN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MINEMET RECHERCHE;REEL/FRAME:005491/0812 Effective date: 19900712 |